Datalogic SC4000 Reference Manual page 41

ELECTRICAL CONNECTIONS
OUTPUT CONNECTIONS USING READING DEVICE POWER
Power is available directly to the Output Device, independently from the
Power Supply Switch inside the SC4000.
CAUTION
OUTPUT CONNECTIONS USING EXTERNAL POWER
Output Device
Power to Output
Output device Signal
Output device
Reference
Figure 39 - Open Emitter Output Using SC4000 Power
Output Device
Power to
Output device
Output device
Reference
Output
Signal
Figure 40 - Open Collector Output Using SC4000 Power
Output Device
Pulled up to External
Output Device Power
Output
Signal
Figure 41 - Output Open Emitter Using External Power
Output Device
Output
Signal
Pulled down to External
Output Device Reference
Figure 42 - Output Open Collector Using External Power
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